Perennial herb, geophyte, 0.3-0.6 m high; corm tunics of wiry black fibres; stem erect, branched. Leaf 1, sheathing, falcate to trailing above, canaliculate. Spathes 50-90 mm long, glaucous, attenuate. Inflorescence with yellow flowers marked with dark yellow to green spots in centre; tepals subequal, erect at base, outspread above, often twisted, outer 30-43 mm long, triangular, oblong to slightly obovate, inner 30-35 mm long. Stamens: filaments 6-10 mm long, united in thick, cylindric, smooth or papillate-pubescent column; anthers 6-10 mm long. Ovary 10-15 mm long; style branching at apex of filament column, branches curving upwards; stigma bilobed. Flowering time Aug., Sept.
Cormous geophyte, up to 0.6 m high. Leaf solitary, sheathing lower stem, channelled and trailing above, 3-6 mm wide. Flowers: style branches not petaloid, terminating in paired crests with entire margins; perianth with outer segments 29-43 x 14-18 mm; only outer segments with a nectar guide at base of limb, segment claws short, yellow with darker yellow-speckled centres; Aug., Sep.
Cormous geophyte, 300-600 mm tall. Leaf 1, sheathing lower stem, channelled, trailing above. Flowers enclosed in green spathes, yellow with darker yellow-speckled centre, tepal claws short, filament column thick, anthers diverging.
Cormous geophyte, 30-60 cm. Leaf solitary, sheathing lower stem, channelled and trailing above. Flowers yellow with a darker yellow-speckled centre, tepal claws short, anthers exserted on a thick filament column.